LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Lane Keep Assist / Lane Departure Assist System (Diagnostic Codes & Circuit Tests) >> LKA/LDA System >> DTC C1A74: Steering Vibrator System Malfunction [10/2015 - 08/2019] >> Description

DTC C1A74: Steering Vibrator System Malfunction [10/2015 - 08/2019]: Description

If the forward recognition camera receives a steering vibration ECU malfunction signal, DTC C1A74 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A74 Steering Vibrator System Malfunction When all of the following conditions are met:
  • The vehicle speed is 5 km/h (4 mph) or more.
  • The LKA/LDA system is on.
  • A malfunction signal from the steering vibration ECU is detected by the forward recognition camera for 5 seconds or more.
  • Steering vibration motor (Steering wheel assembly)
  • Steering vibration ECU
  • Forward recognition camera
  • Spiral cable sub-assembly
  • No. 1 switch wire
  • Wire harness or connector